As shown in the figure, this is a function program that sets the PWM wave frequency and duty cycle.
The parameter fr in the function represents the PWM frequency to be set, and dc represents the duty
Si522 is one of many 13.56MHz chips, mainly used for card swiping. It has been recognized by many users. Its main feature is low power consumption. It is a popular chip in the field of smart locks. Co
[Source: Programmer’s Life WeChat Official Account]
A programmer named Zhang in Shanghai was fired for refusing to take his computer home to work during the Spring Festival holiday. Subsequently, Zhan
A crystal radio is a passive radio without an amplification circuit, which is composed of an antenna, a ground wire , a basic tuning circuit and a crystal as a detector . It is the simplest radio rece
[i=s] This post was last edited by hehung on 2022-8-23 21:07 [/i] # Past sharing [【2022 Digi-Key Innovation Design Competition】Latest unboxing post](https://en.eeworld.com/bbs/thread-1212955-1-1.html
[i=s] This post was last edited by elike on 2018-1-27 16:45 [/i] Since no corresponding broadcast packet viewing program was found under iOS, the basic functions are as follows. BlueNRG and lightblue